Page 138 - Science Class 6 Times Publication

Pure iron is silvery white in colour. It is very hard and is malleable
and ductile. It is a very useful metal. The main uses of iron are:
a. Iron is used to make rods, pipes, nails,
knots and bolts, railway tracks, etc.

b. It is the main part of steel and stainless
steel. Steel is used to make plates, bowls,
glasses, knife, sword and many other
things.
c. Iron forms an important part of red blood cells in our body.
Our blood is red due to the presence of iron.

Copper
Copper is a reddish brown metal
with an attractive metallic lustre. It
occurs in nature in free state as well
as in the form of compounds. The
main compounds that contain copper
in nature are copper pyrite, copper
glance, cuprite, etc. Pure copper is obtained from these compounds
by using several processes.

Copper is used in making utensils, electrical wires and large number
of alloys. It is also used in making coins.

Silver
Silver is a white shinning metal. It occurs in free as well as in
combined state in the earth’s crust. In combined state, it occurs as
silver glance, horn silver, etc.

Silver is used for making ornaments, coins and several silver articles.
It is also used in the production of mirrors.

Gold
Gold is one of the oldest known metals. It occurs
in free state in the hard rocks in the form of  ne
gold particles. Since the hard rocks are broken

Times' Crucial Science and Environment 134 Book 6